Governor for fordson tractors



J. E. WIESBROCK.

GOVERNOR FOR FORDSON TRACTORS. APPLICATION HLED FEB. 2. I920.

1,41 1,545. Patented Apr. 4, 1922.

2 SHEETS-SHEET I- o k 55 x o 53 Jf, IA/Z'esEraK/E J. E. WIESBROCK.GOVERNOR FOR FORDSON TRACTORS. APPLICATION FILED FEB. 2. I920.

1,41 1,545. Patented Apr- 4, 1922.

, 2 SHEETS-SHEET 2- l 3/ JOSEPH E. WIESBROCK, OF NAIPERVILLE, ILLINOIS.

GOVERNOR FORv FORDSON TBACTORS.

Specification 0! Letters Patent.

Patented Apr. 4; 1922.

Application filed February 2, 1920. Serial No. 355,824.

To all whom it may concern:

Be it known that LJosEPH E. Wmsenoox,

a citizen of the United States, residing at Naperville. in the county ofDu Page and State of Illinois, have invented certain new and usefulImprovements in Governors for F ordson Tractors, of which'the followingis a specification, reference being had to the accompanying drawings.

This invention relates to means for governing the speed of internalcombustion engines, and particularly to a governing device designed withspecial reference to the Fordson tractor.

@ne object of my invention is to provide a governing device for tractorsof this character which may be applied to the tractor without alteringor removing any part thereof and which is, therefore, in the form of anattachment.

A further object is to provide a device of this character whereby thespeed of the tractor is governed, not by any direct action of thethrottle valve of the engine, but by providing means for urging thethrottle valve to an open position providing '"overnor actuated meansfor shifting the throttle valve towards its closed position when. thespeed of the engine increases beyond a predetermined degree, and byproviding means for so controlling the governor actuated means that thespeed at which the governor will operate to reduce the opening of thethrottle valve may be changed whenever desired.

A further object is to provide a construction of this character whereinthe governor is driven by the fan belt of the engine.

Other objects will appear in the course of the following description.

My invention is illustrated in the accompanying drawings, wherein Figure1 is a side elevation of a motor car engine and radiator with mygoverning device applied thereto;

Figure 2 is a perspective view of the connection between shafts 41 and38;

Figure 3 is a. front elevation of the governor partly in section;

Figure A} is a top plan view thereof.

Referring to these drawings, it will be seen that l have illustrated a lordson tractor, or so much thereof as is pertinent to the present case,this tractor including an engine block -A, exhaust manifold B, the dashboard C, theradiator l"), and the gasoline tank F. All these parts areof the usual construction. My governor attachment comprises a supportingangle iron, designated 10, which is adapted to be mounted upon the baseof the engine between the radiator and the motor and is held in place bythe two cap screws over the timing gears. Mounted upon this angle ironsup porting member is a shaft 11 which carries a wooden or frictionwheel 12 and a pulley 13 whose diameter is much smaller than thediameter of the friction wheel 12. The frame 14 of the governor is alsomounted upon this angle iron and supports the horizontal shaft 15 whichcarries the gear wheel 16 and the belt wheel 17' from which a crossedbelt 18 runs to the pulley 13. Carried upon the governor frame is thebevelled gear wheel 19 which meshes with the bevelled gear wheel 16 andwhich is concentric to the central rod 20.

Mounted upon this gear wheel is a yoke 21. having bifurcated ears inwhich are mounted the governor arms 22, each provided with a ball at itsextremity and formed inward of its pivot 23 with an upwardly curved lug24, these lugs engaging beneath a dislr 25 which surrounds the shaft 20or rod, and which is urged downward by a spring 26 hearing at its upperend against, a washer 27 extending outward from a hub 28 forming part ofthe member 21. Surrounding this spring is a sleeve 29 which rests uponthe disk 25, this sleeve being slotted for the passage of the screw 27",which screw acts as a guide but permits the sleeve to shiftlongitudinally. This sleeve at its upper end carries anti-frictionmembers 30 which are adapted to bear against a head 31 on the upper endof the shaft or rod 20.

It will be obvious now that the spring 26 normally acts to urge the dish25 downward and draw the governor balls toward the shaft. VVhen,however, the gear wheel 19 is rotated, the governor'balls will be thrownoutward by centrifugal force and the angular ends 24: will act to liftthe sleeve. the upper end of this sleeve strike the head 31, it isobvious that they will lift up on the rod 20 and this rod, through theconnections which will now be described, operates the throttle valve ofthe engine.

The lower end of the rod 20 is mounted inan arm 32 carried upon atransverse shaft When the anti-friction balls 30 at lias connectedthereto an arm 34. Connected to one end of this arm 34 is a coil' spring35, and the other end of this arm extends forward and is provided with aplurality of apertures 36, Of course, this arm 34 ex tends transverselyof the engine of the tractor and has connected to it the upwardlyextending link 37. Mounted in suitable brackets attached to the engineblock or in any other suitable manner is a rock shaft 38 forming part ofmy attachment, Whose extremity is angled, as at 39, to form a crank, thewrist pin of which is engaged with the link 37. The opposite end of thisrock shaft 38 is also cranked, as at 40.

The Fordson tractor, for the purpose of controlling the throttle, isprovided with a longitudinally extending throttle controlling shaft 41which, at its end, is angularly.

bent or cranked, as at 42, and engaged with a transverse lever 43mounted upon the stem 44 of the throttle or butterfly valve 45. The rearend of this shaft 41 extends rearward through the dash board of thetractor to a position where it may be readily handled.

My attachment includes a clip or arm 46 so formed as to be clamped uponthe shaft 41 and to rotate therewith, and this is bifurcated at its endfor the attachment of a link 47 which, in turn, is connected to thecrank arm 40 of the rock shaft 38. Thus, it will be obvious that whenthe shaft 38 is oscillated in one direction by the governor, the shaft41 will be oscillated to cause the throttle valve to move towards itfully closed posit-ion, while when the speed of the enine decreases, theshaft 41 will be oscillated 1n the opposite direction to again bring thethrottle to its normal position. This shaft 41 is ordinarily providedwith an arm 48 to which a spring 49 is connected, this spring beingattached 'to the dash board and normally acting to open the throttle.This spring is relatively light, but the closing of the throttle againstthe vernor takes place against the resistance 0 this spring.

It is particularly desirable that means be provided whereby the governorwill function at different speeds so as to give a flexibility and rangeof speeds to the tractor, and to this end the extremity of the arm 34carries a coil 'spring 35. The lower end of this spring is attached to abell crank lever 51 mounted upon a bracket 52, which, at its upper end,is angled and perforated for the passage of one of the bolts which holdsthe gasoline tank to the engine and which, at its lower end, is held inplace by one of the bolts holding the exhaust manifold to the engineblock. Mounted upon the rear end of the engine frame and specificallyupon a bracket 53 held in place by the bolt that holds the rear end ofthe kerosene tank in determine place, is a lever 54 which is connectedby a connecting rod 55 to the upwardly extending arm of the bell cranklever 51. By sh fting this lever, it is obvious that the tension on thespring 35 may be increased and that this tension increases theresistance to the outward movement of the governor balls so that beforethe governor balls can shift to a position to cause the sleeve 29 toraise the rod 31, there must be a considerable increase in the speed ofthe engine. By relaxing the tension on this spring 35, the resistance tothe movement of the governor balls is decreased and they will functionto lift the valve controlling rod 31 at a lower speed, and if alltension is entirely relaxed from this pring, it is obvious that thegovernor balls will act normally to prevent an increase in the speed ofthe engine from a predetermined point.

I do not wish to be limited to any specific form of governor, as it isobvious that the governor might be of various forms without departingfrom the spirit of the invention. In the mechanism which I illustrate,however, I provide an attachment which may be readil applied to theFordson tractor to provi e for an automatic governing of the speedthereof. This attachment is relativel simple and has been foundthoroughly e fective in practice. It permits the control of the throttleby the throttle controlling shaft 41 of the engine in the usual manner,provided the engine is not running at a high enough speed to cause thegovernor balls to function, and at the same time permits of this speedbeing chan ed or controlled through the lever 54. he mechanism is verysimple, can be readily put in place without any change in theconstruction of the, tractor, and provides a overning attachment whichis particularly necessary 1 for tractors where high speeds areundesirable.

Obviously, many modifications might be made in the details of theconstruction without departing from the spirit of the invention asdefined in the appended claims.

1. A governing attachment for tractors comprising a supporting memberhaving a governor mounted thereon, the governor 1ncluding a central rod,a governor 0 rated sleeve acting to shift the rod in one dlrection whenthe governor is rotated beyond a prespeed, said rod being shiftableindependently of said sleeve, means carried by said supporting memberfor transmitting the power of the engine to the overnor, a

lever operatively connected to t e rod and shifted thereby as the rodmoves longitudinally, a shaft operatively connected to said lever andadapted to be mounted upon the engine and operatively connected tooscillate with the throttle operating shaft of the engine, a contractilespring connected to the opposite-end of the first named lever and which,when placed under tension, resists longitudinal movement of the centralrbd in onedirection, and manually operable means for adjusting thetension of said spring, and including a lever operatively connected toone end of the spring and adapted to stretch the spring when shifted inone direction.

2. A governing attachment for internal combustion engine driven tractorscomprising a supporting member adapted to be .mounted upon the engine, apower shaft carried thereby and extending therefrom and having meanswhereby it may be operatively connected to a rotating part of theengine, a rotatable member operatively geared to said power shaft andhaving centrifugally actuated governor balls, a spring resisting outwardmovement of the governor balls, a centrally disposed rod shifted in onedirection by the outward movement of the governor balls, a leveroperatively connected to the rod and shifted thereby, a spring adapt edto resist the movement of the rod under the action of the governorballs, a longitudi nally extending rock shaft having crank arms at itsopposite ends, one of said arms being operatively connected to saidlever, bearings adapted to be attached to the engine on which said rockshaft is mounted, a link connected to the crank arm to one end of therock shaft, an arm connected to said link and having a clamp wherebyitmay be connected to the throttle controlling rock shaft of the engine,and means for tensioning said last named spring or relaxing the tensionthereon comprising a bracket adapted to be mounted upon the engine, abell crank mounted on the bracket and having one arm connected to thespring, a rod extending from said arm, a lever to which the rod isconnected, and a bracket upon which the lever is pivoted adapted to beattached to the tractor.

3. The combination with a tractor having an. internal combustion engine,a throttle valve, a longitudinally extending shaft operatively connectedto the throttle valve to rotate it, and a fan belt of means forgoverning the movement of the throttle valve comprising a supportingmember mounted upon the engine at the forward end thereof, a governorframe carried by said s pporting member and supporting a shaft, meansoperatively engaging the shaft with a rotated element on the engine, agear wheel on the governor frame operatively engaged by said shaft androtating in a horizontal plane, a central, verticallyv movable rodaround which said gear wheel rotates, a sleeve on the rod, governorballs rotating with said gear wheel and operatively connected to saidsleeve to cause a lifting of the sleeve, said sleeve lifting the rod, alever pivoted to the governor frame and extending transversely of theengine, an operative connection between the lower end of the verticallymovable rod and said lever, a spring connected to this end of the leverand adapted, when under tension, to resist upward movement of thevertical rod and thereby,

resist the outward movement of the governor balls, alongitudinallyextending rock shaft disposed parallel to the throttle controllingregular shaft and having crank arms at its opposite ends, the forwardcrank arm being operatively connected to the end of said lever oppositethe spring, an arm on the throttle controlling shaft, a link connectingsaid arm with the crank arm on the second named rock shaft, and meansfor tensioning the first named spring comprising a bell crank levermounted upon the engine and having one arm connected to the lower end ofsaid spring, a link connected to the other arm of the bell crank lever,and a manually operable lever mounted on the tractor to which said rodis connected.

In testimony whereof I hereunto affix: my signature.

JOSEPH E. WIESBROUK.

